Sofa



FIG. 1 is a perspective view of the sofa design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right, side view thereof,

FIG. 5 is a left, side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a perspective view of a section of the sofa shown in FIG. 1,the section is removed for ease of illustration;

FIG. 8 is a front view thereof;

FIG. 9 is a rear view thereof;

FIG. 10 is a right, side view thereof;

FIG. 11 is a left, side view thereof; and,

FIG. 12 is a top view thereof.

The broken line disclosure is for illustrative purposes only and formsno part of the claimed design.

The ornamental design for a sofa, as shown and described.